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标题：Analysis of lightning strokes associated with sprites observed by ISUAL in the vicinity of North America
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作者：Gaopeng Lu ; Steven A. Cummer ; Alfred B. Chen 等
期刊名称：Terrestrial Atmospheric and Oceanic Sciences
印刷版ISSN：1017-0839
出版年度：2017
卷号：28
期号：4
页码：583-595
DOI：10.3319/TAO.2017.03.31.01
出版社：Chinese Geoscience Union
摘要：We examined the broadband ( 80%) observed over oceanic and coastal thunderstorms mostly in tropical areas. The mean and median of impulse charge moment change (iCMC) associated with positive (negative) sprites are 346 C km (-709 C km) and 280 C km (-649 C km), respectively. The morphology and parent lightning properties (e.g., typically with high peak currents > -80 kA and large iCMCs > -300 C km) of negative sprites observed by the ISUAL are generally consistent with that documented in ground-based observations, but the ISUAL dataset does imply that sprites are sometimes produced by negative strokes with sub-critical iCMCs (less than -300 C km). Consequently, the future survey of global occurrence of sprites is desired to be based on complementary ground and space-borne observations.
关键词：Cloud to ground (CG) lightning stroke; Negative sprite; Space observation; Impulse charge moment change (iCMC);